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28 April 2010, 11:10
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#1
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RIBnet supporter
Country: Other
Town: Stanley, Falkland Is
Boat name: Seawolf
Make: Osprey Vipermax 5.8
Length: 5m +
Engine: Etec 150
Join Date: Mar 2006
Posts: 3,237
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Mariner Sailmate
Looking at a new aux engine for the Vipermax and the Mariner Sailmate has popped onto the radar as something that might be a good choice - the high thrust fine-pitched Sailmate prop being designed to propel heavy craft.
My previous Johnson 6hp (which unfortunately I lost as part of the sale of the Humber) I always felt probably didn't make anywhere near 6hp as when shoving a heavy RIB the revs were bogged down and there was effectively no rev difference between half and full throttle.
Has anybody got a Sailmate 4/5/6hp, any comments on either the engine or the Sailmate setup? On paper it sounds like a good idea, but a search didn't show much up on here though most people don't seem to have an aux anyway which could be why.
On another point, I always vaguely intended to get a toy inflatable (2.x metre) and the aux was going to be used on that too. I assume the Sailmate would still be OK, just perhaps a little slow?
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A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...
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28 April 2010, 11:31
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#2
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Member
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 5,358
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I've had a 4hp 4-stroke Merc Sailmate for 3 years now. Bought it as an aux for my 5.8m Vipermax, so my experience should be exactly what you're looking for?
I haven't got around to making an aux bracket yet though, so it hasn't been out of the garage.......
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28 April 2010, 12:41
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#3
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Member
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 2,854
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I may be wrong here, but memory says the sailmate type engines also have a better balance of forward & reverse thrust for manoevering?
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28 April 2010, 14:01
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#4
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RIBnet supporter
Country: Other
Town: Stanley, Falkland Is
Boat name: Seawolf
Make: Osprey Vipermax 5.8
Length: 5m +
Engine: Etec 150
Join Date: Mar 2006
Posts: 3,237
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I am getting my Vmax built with a slight alteration to the transom on one side so that I don't need an aux bracket
The 4hp Sailmate has an internal tank plus external feed, while the 5/6 only have an external, so I think it's going to be a 4hp Sailmate, have sent off to see if the Mercury version is available as I'd prefer the black to Mariner's 1970s colour scheme
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A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...
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28 April 2010, 14:17
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#5
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Member
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 5,358
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Quote:
Originally Posted by BogMonster
I am getting my Vmax built with a slight alteration to the transom on one side so that I don't need an aux bracket 
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Yes, I did consider chopping out the lip on the top of the transom, but thought it would look out of place.
What main motor have you decided upon?
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28 April 2010, 14:45
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#6
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RIBnet supporter
Country: Other
Town: Stanley, Falkland Is
Boat name: Seawolf
Make: Osprey Vipermax 5.8
Length: 5m +
Engine: Etec 150
Join Date: Mar 2006
Posts: 3,237
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Jono pictured one on here with that mod and it looked OK.
Main whisk is an Etec 150
I figured I can add a chartplotter later, but bolting the extra 20 horses on would be messy
__________________
A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...
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28 April 2010, 15:25
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#7
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Member
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 5,358
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Yes, it should be fine.
Just make sure they don't make your transom too thick. Mine measures 60mm and I think the saddle on the Merc Sailmate only opens up to around 55mm.
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28 April 2010, 18:53
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#8
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RIBnet supporter
Country: Other
Town: Stanley, Falkland Is
Boat name: Seawolf
Make: Osprey Vipermax 5.8
Length: 5m +
Engine: Etec 150
Join Date: Mar 2006
Posts: 3,237
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Ah - ok. Not something I had thought of, there was loads of clearance for the Johnson on a Humber transom. Will check it out, ta for the tip!!
__________________
A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...
Sent from my Computer, using a keyboard and mouse
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28 April 2010, 19:25
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#9
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Member
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 6,047
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Quote:
Originally Posted by Downhilldai
I haven't got around to making an aux bracket yet though, so it hasn't been out of the garage.......
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So how do you find it performs in the garage? Does it collect less dust than other aux?
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28 April 2010, 19:31
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#10
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Member
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 5,358
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Quote:
Originally Posted by Mollers
So how do you find it performs in the garage? Does it collect less dust than other aux? 
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No, the entire collection of DHD outboards tend to perform similarly in that respect, but this one, being the only 4-stroke, does use a drop less fuel.
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